简书链接:java方法签名快速生成
文章字数：33,阅读全文大约需要1分钟
写多了jni代码一般都是可以手写签名的，但是手写难免会忘记少打多打。

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private static void getDescriptor(final StringBuilder buf, final Class<?> c) {
       Class<?> d = c;
       while (true) {
           if (d.isPrimitive()) {
               char car;
               if (d == Integer.TYPE) {
                   car = 'I';
               } else if (d == Void.TYPE) {
                   car = 'V';
               } else if (d == Boolean.TYPE) {
                   car = 'Z';
               } else if (d == Byte.TYPE) {
                   car = 'B';
               } else if (d == Character.TYPE) {
                   car = 'C';
               } else if (d == Short.TYPE) {
                   car = 'S';
               } else if (d == Double.TYPE) {
                   car = 'D';
               } else if (d == Float.TYPE) {
                   car = 'F';
               } else /* if (d == Long.TYPE) */{
                   car = 'J';
               }
               buf.append(car);
               return;
           } else if (d.isArray()) {
               buf.append('[');
               d = d.getComponentType();
           } else {
               buf.append('L');
               String name = d.getName();
               int len = name.length();
               for (int i = 0; i < len; ++i) {
                   char car = name.charAt(i);
                   buf.append(car == '.' ? '/' : car);
               }
               buf.append(';');
               return;
           }
       }
   }

String desc = Type.getDescriptor(java.io.ObjectOutput.class);